Recent content by grejuvaa

  1. grejuvaa

    Vibration and Modal Analysis: Adding massless springs to a shaft

    Thank you for the answers. To be more clear I have uploaded some images. I draw a shaft. When I run free free modal analysis first bending mode is 362,2 and second bending mode is 986,45 but when i fix the shaft from 2 sides the first bending mode decreases to 361,3 and the second to 980,9. What...
  2. grejuvaa

    Vibration and Modal Analysis: Adding massless springs to a shaft

    this is not a homework i am just trying to improve myself. Both of them are first bending mode. So i think that is not about mode shape.
  3. grejuvaa

    Vibration and Modal Analysis: Adding massless springs to a shaft

    Hello, I am working on vibrations and modal analysis recently. I have a question that I could not find any answer. Can you please help me? Imagine a shaft. When we run the free free modal analysis lets assume that first bending mode is 600 Hz. Then we add 2 massless springs to the shaft. The...